/// <reference types="node" />
import { FunctionStats } from "./provider";
import { SmallestN, Statistics } from "./shared";
import { PropertiesOfType } from "./types";
export declare class FactoryMap<K = string, V = {}> extends Map<K, V> {
    readonly factory: (key: K) => V;
    constructor(factory: (key: K) => V);
    getOrCreate(key: K): V;
}
export declare class FunctionStatsMap {
    fIncremental: FactoryMap<string, FunctionStats>;
    fAggregate: FactoryMap<string, FunctionStats>;
    aggregate: FunctionStats;
    update(fn: string, key: keyof PropertiesOfType<FunctionStats, Statistics>, value: number): void;
    incr(fn: string, key: keyof PropertiesOfType<FunctionStats, number>, n?: number): void;
    resetIncremental(): void;
    toString(): string;
    clear(): void;
}
export declare class FunctionCpuUsage {
    utime: Statistics;
    stime: Statistics;
    cpuTime: Statistics;
    smallest: SmallestN<void>;
}
export declare class MemoryLeakDetector {
    private instances;
    private counters;
    private warned;
    private memorySize;
    constructor(memorySize?: number);
    detectedNewLeak(fn: string, instanceId: string, memoryUsage: NodeJS.MemoryUsage): boolean;
    clear(): void;
}